Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

The forward price on the price risk forward or futures contract, such as a gas futures contract.

+ References

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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Schedule of Valuation Processes (Detail) - Level 3 $ in Millions	Jun. 30, 2020 USD ($) $ / gal	Mar. 31, 2020 USD ($)
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Assets \| $		$ 352
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas Liquids
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Liabilities, fair value \| $	$ (3)
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas Liquids \| Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	0.14
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas Liquids \| Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	0.79
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas Liquids \| Weighted Average [Member]
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	0.38
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas [Member]
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Liabilities, fair value \| $	$ (4)
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas [Member] \| Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	1.50
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas [Member] \| Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	2.56
Market Approach Valuation Technique \| Derivative Liabilities \| Natural Gas [Member] \| Weighted Average [Member]
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	1.80
Market Approach Valuation Technique \| Derivative Assets \| Natural Gas Liquids
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Assets \| $	$ 1
Market Approach Valuation Technique \| Derivative Assets \| Natural Gas Liquids \| Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	0.18
Market Approach Valuation Technique \| Derivative Assets \| Natural Gas Liquids \| Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	0.79
Market Approach Valuation Technique \| Derivative Assets \| Natural Gas Liquids \| Weighted Average [Member]
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Forward Curve Range	0.34